Article
Engineering, Electrical & Electronic
Tetsuya Shimogaki, Hikaru Fukushima, Daisuke Inoue, Tadashi Ichikawa, Tatsuya Yamashita
Summary: Grating couplers (GCs) are important devices for transmitting and receiving light in silicon photonic integrated circuits (PICs). A polarization splitting GC (PSGC) was proposed and tested for its potential use in LiDAR optical antennas. The experiment showed that the designed PSGC successfully transmitted a polarization-multiplexed beam and further analysis was conducted to maximize the efficiency of the optical antenna.
IEEE PHOTONICS JOURNAL
(2021)
Article
Optics
Jun Gondo, Takemasa Tamanuki, Ryo Tetsuya, Mikiya Kamata, Hiroyuki Ito, Toshihiko Baba
Summary: This study developed a nonmechanical beam scanner for on-chip light detection and ranging devices. By canceling the frequency modulation shift, step-like beam scanning was achieved, improving angular resolution.
Article
Nanoscience & Nanotechnology
Farshid Ashtiani, Firooz Aflatouni
Summary: A novel multilayer 2-D optical phased array technology is introduced in this study, achieving a record element-pitch and a wide steering range through special designs.
Article
Optics
Tianyang Fu, Xin Yan, Xia Zhang, Xiaomin Ren
Summary: Non-uniformly distributed gratings on the silicon-on-insulator platform for one-dimensional beam steering are designed with the direct binary search inverse-design method. The gratings exhibit good emission directionality and far-field characteristics. By polarization multiplexing and etching depth optimization, a remarkable longitudinal scanning angle of 32.10 degrees and high beam steering efficiency of 0.55 degrees/nm are obtained. This work may pave the way for the development of miniaturized optical phased arrays with excellent beam steering performance.
Article
Chemistry, Physical
Zhenhua Wu, Zhimao Wu, Haoran Lv, Wenbin Zhang, Zekun Liu, Shuai Zhang, Erzhen Mu, Hengxin Lin, Qing Zhang, Daxiang Cui, Thomas Thundat, Zhiyu Hu
Summary: This study reports on a technique of fabricating infrared light sources using nano-localized catalytic combustion, which enables wavelength tunability and enhances infrared emission by integrating nanophotonic structures.
Review
Chemistry, Multidisciplinary
Gyeongtae Kim, Seokwoo Kim, Hongyoon Kim, Jihae Lee, Trevon Badloe, Junsuk Rho
Summary: Holographic display, as a highly realistic way of reconstructing optical images in 3D space, has gained attention as the next-generation display platform for providing deeper immersive experiences. This review introduces novel metasurfaces-based nanophotonic platforms that offer exceptional control of electromagnetic waves at the subwavelength scale, overcoming limitations of current holographic image generation methods.
Article
Chemistry, Multidisciplinary
Chi Li, Noah Mendelson, Ritika Ritika, YongLiang Chen, Zai-Quan Xu, Milos Toth, Igor Aharonovich
Summary: The fabrication of large-scale arrays of single-photon emitters in hexagonal boron nitride (hBN) shows promising results in isolating single defects and achieving near-unity yield of a single emitter at each pillar site with a diameter of around 250 nm. These results pave the way for scalability and high throughput fabrication of single-photon emitters for advanced quantum photonic applications.
Article
Optics
Ehab Awad
Summary: A novel continuous-wave silicon compatible metamaterial nanolaser was designed and demonstrated, lasing at 1550 nm when pumped at 800 nm. The metamaterial waveguide supports fundamental single-mode propagation, efficient light coupling, and simultaneous forward and backward outputs, with high quantum efficiency and low lasing threshold.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Erfan M. Fard, Soha Namnabat, Stephanie Arouh, Robert A. Norwood, Stanley Pau, Nasser Peyghambarian
Summary: A design of an adiabatic silicon nitride taper to polymer waveguide coupler is presented in this study, showing high misalignment tolerance and low coupling loss.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Hiroto Shinomiya, Hiroshi Sugimoto, Tatsuki Hinamoto, Yan Joe Lee, Mark L. Brongersma, Minoru Fujii
Summary: Optical antennas play an important role in controlling photonic environments and enhancing light emission from two-dimensional transition-metal dichalcogenides. Dielectric nanoantennas with multipolar Mie resonances offer unique advantages for simultaneous enhancement of absorption and emission processes. In this study, a double resonance nanoantenna composed of a crystalline silicon nanoparticle is used to modify the photoluminescence behavior of monolayer MoS2. The coupling of the excitation process to the magnetic quadrupole resonance and the emission process to the magnetic dipole resonance results in significant modification of the spectral shape and enhancement of the photoluminescence intensity.
Article
Chemistry, Multidisciplinary
Taeko Matsukata, F. Javier Garcia de Abajo, Takumi Sannomiya
Summary: Research on exciting nanospheres to generate circularly polarized light emission along arbitrary directions further demonstrates the feasibility of using free-electron-induced light emission in applications such as quantum communication and encryption.
Article
Nanoscience & Nanotechnology
Evelyn Diaz-Escobar, Angela I. Barreda, Laura Mercade, Amadeu Griol, Alessandro Pitanti, Alejandro Martinez
Summary: Far-field scattering of high-index nanoparticles can be greatly reduced via interference of multipolar moments, resulting in anapole states. We analyze the light transmission along chains of regular and slotted silicon disks in the frequency region over the light cone. Transmission is not observed at wavelengths corresponding to the excitation of the first electric anapole for regular disks, but large transmission is observed for slotted disks due to the excitation of toroidal dipole and magnetic quadrupole modes. Our results provide new insights into the role of radiationless states in light guidance along nanoparticle chains.
Article
Nanoscience & Nanotechnology
Kuidong Wang, Minghao Li, Hui-Hsin Hsiao, Fengling Zhang, Marcus Seidel, Ai-Yin Liu, Jie Chen, Eloise Devaux, Cyriaque Genet, Thomas Ebbesen
Summary: The study demonstrates a large, ultrafast anisotropic modulation of light using the anisotropic nonlinear response of indium tin oxide and plasmonic nanoantennas. A polarization elliptic rotation and phase delay between the oscillations of linear polarization axes are achieved, showing promise for implementing all-optical high-speed polarization modulators and retarders.
Article
Chemistry, Multidisciplinary
Philipp Grimm, Stefan Zeissner, Maximilian Roedel, Simon Wiegand, Sebastian Hammer, Monika Emmerling, Enno Schatz, Rene Kullock, Jens Pflaum, Bert Hecht
Summary: This study presents a nanoscale organic light-emitting antenna (OLEA) structure that serves as a color- and directionality-switchable light source. The structure utilizes gold nanoantennas and an organic semiconductor to achieve color and emission direction switching based on the polarity of the applied voltage. The OLEA structure facilitates efficient radiation transfer and eliminates the need for transparent electrodes.
Article
Optics
Yuxuan Li, Xiaobin Liu, Xuetong Li, Lanxuan Zhang, Baisong Chen, Zihao Zhi, Xueyan Li, Guowei Zhang, Peng Ye, Guanzhong Huang, Deyong He, Wei Chen, Fengli Gao, Pengfei Guo, Xianshu Luo, Guoqiang Lo, Junfeng Song
Summary: This study proposes a Ge-on-Si APD operating at room temperature, with low dark current and low breakdown voltage, combined with an RF amplifier module and counter for efficient detection of 1550 nm weak light signals.
CHINESE OPTICS LETTERS
(2022)
Article
Physics, Multidisciplinary
Yong Wang, Hao Li, Li-Xing You, Chao-Lin Lv, He-Qing Wang, Xing-Yu Zhang, Wei-Jun Zhang, Hui Zhou, Lu Zhang, Xiao-Yan Yang, Zhen Wang
Article
Optics
Hao Li, Yong Wang, Lixing You, Heqing Wang, Hui Zhou, Peng Hu, Weijun Zhang, Xiaoyu Liu, Xiaoyan Yang, Lu Zhang, Zhen Wang, Xiaoming Xie
PHOTONICS RESEARCH
(2019)
Article
Optics
Xintong Hou, Ni Yao, Lixing You, Hao Li, Wei Fang, Weijun Zhang, Zhen Wang, Limin Tong, Xiaoming Xie
Article
Optics
Bin Li, Ruiming Zhang, Yong Wang, Hao Li, Lixing You, Zhonghua Ou, Heng Zhou, Yun Ling, Yunxiang Wang, Guangwei Deng, You Wang, Haizhi Song, Kun Qiu, Qiang Zhou
Article
Optics
Peng Hu, Hao Li, Lixing You, Heqing Wang, You Xiao, Jia Huang, Xiaoyan Yang, Weijun Zhang, Zhen Wang, Xiaoming Xie
Article
Optics
Xintong Hou, Xiao-Yun Xu, Guangzhao Xu, Lixing You, Xian-Min Jin, Hao Li, Weijun Zhang, Ruo-Jing Ren, Xuan-Lun Huang, Zhen Wang
Summary: A novel FLDW waveguide-coupled SNSPD device was designed and realized, achieving high optical absorption and system detection efficiency. This method provides a feasible single-photon detector solution for future on-chip integrated quantum photonic experiments and applications.
Article
Optics
Wei-Jun Zhang, Guang-Zhao Xu, Li-Xing You, Cheng-Jun Zhang, Hao Huang, Xin Ou, Xing-Qu Sun, Jia-Min Xiong, Hao Li, Zhen Wang, Xiao-Ming Xie
Summary: A compact, scalable, and high-performance superconducting nanowire single-photon detector (SNSPD) array with multichannel optical fiber array-coupled configuration is reported. The detectors achieved high pixel yield, system detection efficiency, and low optical crosstalk coefficient, showing promising potential for scalable and high-performance SNSPD development.
Article
Optics
Xing-Qu Sun, Wei-Jun Zhang, Cheng-Jun Zhang, Li-Xing You, Guang-Zhao Xu, Jia Huang, Hui Zhou, Hao Li, Zhen Wang, Xiao-Ming Xie
Summary: Superconducting nanowire single-photon detectors (SNSPDs) have been widely studied for their outstanding performance in detecting visible and near-infrared single photons. This research introduces a prototype of a polarimeter based on a four-pixel superconducting nanowire array, capable of resolving the polarization state of linearly polarized light at the single-photon level. The detector array design shows high detection efficiency and timing jitter, paving the way for the development of a single-photon sensitive, fast, and large-scale integrated polarization polarimeter or imager.
Article
Physics, Applied
Yiming Pan, Hui Zhou, Lu Zhang, Hao Li, Yan Tang, Huiqin Yu, Mengting Si, Lixing You, Zhen Wang
Summary: This study demonstrates the potential of NbN-SNSPDs for use in MIR applications, especially for longer MIR wavelengths, by fabricating SNSPDs with gamma-Nb4N3 films instead of delta-NbN films. The dependence of the normalized detection efficiency on the bias current showed a clear trend towards a saturated plateau for wavelengths up to 2145 nm, indicating the feasibility of using gamma-Nb4N3 SNSPDs for longer MIR wavelengths.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Physics, Applied
Peng Hu, Yuexue Ma, Hao Li, Ziyao Liu, Huiqin Yu, Jia Quan, You Xiao, Lixing You, Yanjie Liu, Jingtao Liang, Zhen Wang
Summary: This study presents the development of a superconducting nanowire single-photon detector with a hybrid cryocooler, capable of achieving a maximum detection efficiency of 93% at 1550 nm, making it promising for deep-space communications and quantum information applications.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Optics
Guang-Zhao Xu, Wei-Jun Zhang, Li-Xing You, Jia-Min Xiong, Xing-Qu Sun, Hao Huang, Xin Ou, Yi-Ming Pan, Chao-Lin Lv, Hao Li, Zhen Wang, Xiao-Ming Xie
Summary: Superconducting microstrip single-photon detectors (SMSPD) have smaller kinetic inductance, higher working current, and lower fabrication requirements compared to traditional SNSPDs, making them potentially useful in the development of ultralarge active area detectors. However, research on SMSPD is still in its early stages, and achieving high performance and practical use remains an open question.
PHOTONICS RESEARCH
(2021)
Article
Optics
Yun-Ru Fan, Chen-Zhi Yuan, Rui-Ming Zhang, Si Shen, Peng Wu, He-Qing Wang, Hao Li, Guang-Wei Deng, Hai-Zhi Song, Li-Xing You, Zhen Wang, You Wang, Guang-Can Guo, Qiang Zhou
Summary: This paper investigates the effect of dispersion on the indistinguishability between single-photon wave-packets through the Hong-Ou-Mandel (HOM) interference. The results show that dispersion can affect the interference curve, providing insights into the single-photon wave-packet and potential applications of HOM interference.
PHOTONICS RESEARCH
(2021)
Article
Engineering, Electrical & Electronic
Heqing Wang, Peng Hu, You Xiao, Xingyu Zhang, Hui Zhou, Weijun Zhang, Hao Li, Lixing You, Zhen Wang
Summary: A multispectral superconducting nanowire single-photon detector based on a thickness-modulated optical film stack is reported. This detector can perform single-photon detection in different wavelength ranges. The experimental results show high detection efficiencies at four specific wavelengths. In addition, a multispectral detector array with four pixels is demonstrated, and a photon flux reconstruction experiment is performed. This multispectral detector enriches the applications of optical architecture.
IEEE PHOTONICS JOURNAL
(2022)
Article
Physics, Applied
Jia-Min Xiong, Wei-Jun Zhang, Guang-Zhao Xu, Li-Xing You, Xing-Yu Zhang, Lu Zhang, Cheng-Jun Zhang, Dong-Hui Fan, Yu-Ze Wang, Hao Li, Zhen Wang
Summary: This study introduces an alternative method to reduce current crowding in SNSPD and SMSPD by increasing the thickness of bends through the deposition and lift-off of a secondary superconducting film. Measurement and comparison of detectors with different filling factors and bend configurations show improvements in detection efficiency, intrinsic dark count rate, and time jitter due to the enhanced switching current.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Article
Optics
Hao Yu, Chenzhi Yuan, Ruiming Zhang, Zichang Zhang, Hao Li, You Wang, Guangwei Deng, Lixing You, Haizhi Song, Zhiming Wang, Guang-Can Guo, Qiang Zhou
Summary: The article introduces a 1.5 μm chip-scale single-photon source based on lithium niobate on insulator. By employing spectral multiplexing and active feed-forward spectral manipulating, the performance of the single-photon source is significantly improved. Experimental results show that spectral multiplexing can increase the heralded single-photon rate and maintain a low g((2))(0) value, and the spectral multiplexing and feed-forward control effectively eliminate the frequency correlation of photon pairs.
PHOTONICS RESEARCH
(2022)
